The condensing boiler precis
The condensing boiler precis
A condensing boiler is a high efficiency advanced boiler that contains an additional heat exchanger in order that the hot flue gases transfer much of their heat to pre warm the cold water input. When functioning at maximum efficiency, the water vapour created in the combustion process condenses back into water letting go of the latent heat of vaporisation.
A side effect will be this water, named condensate, most times acidic, needs to be piped outside to a drain or water drain. The boiler will have to be mounted to a wall and the exhaust gases will pass through the flue. Hot water is provided by a little storage tank to help speedy hot water .
Can you advise on the right boiler size?
You should keep in mind that many years ago central heating engineers oftentimes installed boilers that had a higher yield than purely necessary.. Whilst this ensured that there was little probability of the boiler being unable to furnish sufficient hot water, irregardless of the winter weather, it also meant that they were not running a full output, and so running in an ineffective manner. If you have bettered the energy efficiency of your home since the previous boiler was fitted, it could well be that you will be able to fit a lower capability boiler than before.
We urge seeking professional advice from a CORGI recorded installer before choosing an appropriate alternate boiler.
Do the radiators need to be oversize with a condensing boiler?
The underlying reason for this amended efficiency from a condensing boiler is because it holds a bigger heat exchanger. More Prominent radiators would result in cooler return water temperatures, and so enable greater energy efficiency, but the extra benefit has not been regarded as cost effective, holding in mind that the system is working at very low capacity for the majority of the heating season. That in all probability remains true, though the smaller heating demand for new build may well mean that homeowners would now endure over-sized radiators more willingly.
The SEDBUK initiative reviewed these topics, during which it was argued whether condensing boilers required to be handled differently from others. The recommendation was that no new recommendations were needed, and the test results for both cases use the same SEDBUK equation.